Unnailing machine



Jan. 13,1931.

J. A.4 ROGERS UNNAILING MACHINE Filed'Jan.v 25, 1928 2 sheets-sheet 2WHSES 7.9` J/ L@ 2 5 of a nail, andv prior to Patented Jan. 13, 1931 v-UNITED STATES Perl-,13Nlfj,V OFFICE JosEPH A. ROGERS, or'v YORK, N. Y.

UNNAILING MACHINE Application mee January 25, 1928. seriaino. 249,419.

This invention relates to a machine for pulling'or removing projectingnails.

Someof the objects of the presentinveii-` tion are: to` provide. lamachine Which `is '5 adaptedto traverse a roW of projecting nails; used-for attaching anything,v and forexpeditiously pulling vor removing thenailsone after, the otherytofprovide ak machine of the indicatedcharacter Whichwill be. portable Y -110 by hand and Whoseioperatingparts maybe motor operated; andtoprovide a machine of the indicatedcharacter which Will embody novel features of constructionandoperationand `Whichvvill be sturdy and Ycomparatively .15 inexpensive. v Y J YThe nature ofthe-invention and its distinguishing features andadvantages Will appear-When the following specification is read inConnection With the accompanying draw- 20 ing, in Which-I V`Figure 1 isa longitudinal sectional elevation of the machine embodyingthe featureslof the present invention, showingthe disposition ofthe parts just afterthe removal the engagement o f another nail. Fig. 2 is a `transversesectional view `taken on the line 2 2, ofV Fig. `1'. Y

Fig. 3 isa vieW similarn to Figl', With cer-V tain parts removed tomoreclearly illustrate certain features of the machine, Fig.l 4 i-satransverse seotionalview taken onthelineLl-llofFig. 1. e' j,

Fig.l is a horizontal Vsectional view taken c on the line 5-5, ofFig.1.V Y f Fig. 6 yis a view similarto Fig. 1, but showing-a transpositionof the parts just vprior to Vthe initial nail pulling operation. l

" Fig. V7 is a View similar to Fig. 6, but show- Y .handle 11 at oneend,v a bottom Yor base .plateVV l y12 which moves in Vcontact Withthematerial 5@ Y which AS-I19l B,Cl, an'opening' at the lower' ing atransposition of the-partsnjustpr'ior to front end, and spacedpointslt.V The, ceasing 10 is divided longitudinallyby apartition 15 Yto provide acoinpartment 16, and acompartment `17,V the latter beingsubdivided by an angular Wall 18 Whichpresents a receptaclelfd 55 forthe removedfastenersor nails. Thev nails in the jremoving operation aredefiectedinto theV receptaclel A,19 by` a Wally20. 'arrangedY at l anangle and'servng as a defiector. The rear end of the rejceptaclef19hasa'closure' mem?. ber or doorA 21 Whichmay be opened forthe purpose ofdischargingthe nails Withiny the receptacle 19.- Arranged Within the-coin` partment liSa frame22, and this frameis fixedly securedfi-nany'suitablemanner to one 65 of the side Walls ofthe casing 10. Theframe y22V includes vertically .disposedidovetail grooves23 and24.1,.a`nd'gside plates25 and 26. A Vframe 27A is-arranged for up anddown movement With respect to the fixed frame-22 andthis isaccomplishedi'by the provision of dovetail membersj28 and, 29respectively disposed in the. grooves 23 and r.211'. The frame 27 willtherefore be mounted. forslidable up and down movement Yvv.ifth respecttothe frame 22. j fj Y In-,order to effect the up; and down movement ofthe' frame 27.there is provided a grooved cam 30. Vkeyed to ashaftSlvvhosey op- POSte. endser'e respectively "fiolllfllledl in 80.

lbearingsrespectively in the plates 25 and 26.

The-cam 301is secured to the shaft 31 eccenj trically With respect tothe axis of said shaft. The cam 8O moves in contact With the upper and.lower horizontallydisposed portions 32 85 and 33 of the frame 217. Y Theshaft 31 also has 'keyed thereto; agear. 311 Which meshes with .aypinion 35 keyed to a stub shaft 36j. mounted for rotationV in a bearing37 carried by the plate 26. The stub` shaft 36 has keyed thereto a bevelgear 38 which meshes With a .bevel gear 39 keyed .to a shaft elementv 40mountedfforrotation 'in bearingslll on the f partition 15;: TheshaftelementO is adaptedxforconnection with a known type of flexibleAshaft con'nectedWith ajsuitablesource j Vof power suc-h as anelectriclnoton Nail encountering meansv is positioned at the-bottom'y ofthe'casing k10 to encounter one of` theV projecting nailsfto. ,preventthe advancement of the machine further than i a point at which the nailengaging means to be hereinafter described, will be in position toengage the encountered nail. The said nail encountering means includesa. member 42 mounted for reciprocation on studs 43 car-V ried by theframe 22 and disposed-respectively lin-slots 44 in the member 42.-l Themember 42 has an abutment 45 at the-for ward end which encounters eachnailnas shown 1n Figs. l and 3, w'l1e1the'me1nber42" is in its forwardposition. The member 42 is moved to its forward nail encounteringposition by means of a sectorfof'teeth 46 on` a disk 47 keyedto theshaft 3l, and teeth A48 on* the member 42 withfwhich-the teeth V46 areadapted to engage in the rotation of the disk 47,in a clockwisedirection. The member42 is fhelvd in its forward position by a latch v49pivoted as at `5) tothe plate-25. Thev latch 49 is acted on by afspring5l also carried by the plate 25.? vrlhe spring 51 has a normal` tendencyt move the latch 49 to a point to engage the rear endv of the-member 42to hold the member'42vagainst rearward movement.Y rlhe member 42 ismoved rearwardlyby means 'of a Acoil spring 52 which has one endthereof'connected with the abutment 45 as at 53, and-the oppositeend'thereof is connected with the side plate 25, as at 54. The latch .49has a lug l55 which is encountered by a lug 56 on the frame 27 in thedownward movement of the frame -27 -to cause the disengagement ofl thelatch 49 with the member 42, to permit-the springy 52 to function toeect the rearward movement off dovetail groove 6l in a vertical portionofthe able frame4 '2 movable frame 27. Thefblock 59, and 4therefore theclaw member 57 is'under the'influence of a coil spring 62 which has oneend thereof connected as at 63 with the block 59, andthe opposite endthereof is connected as at`64 with ame'mber 65 carried by thev mov- 7.It Vwill therefore be Vapparent'that the nail engaging means '.will'bemovable relatively tothe movable; frame 27 under the vaction of thespring 62.j Inorder to cause the nail engaging means to Vmove with-themovable frame 27 ther'eis provided a latch ,66'iwhich is pivotallymounted as at 67 to the frame A27, andjits opposite end isengageablewith a projection 68 on the block l59. Y A lspring69f'ca'rried by thelframe v27 move upwardly, the latch 66 engages a pin70 carried' by the plate 26, causing the latch to Vmove outofiengagement with the projection 68. This is followed immediately by'anupward jerk onfthe` headV of the nail tofcomplete the removingoperation. The removed nail will be projected upwardly againstv the wallV2O andjbedeflected thereby into the receptacle'l). Y

In order' to effect the'downward movement of the nail engaging means,and to place the spring 62 under tension there is provided a gear 7lmounted for rotation on astu'bk shaftV 72 carried by the plate 26. Thesaid gear 71 meshes with the gear Y34, consequently the gear 7l rotatesin' a counter clockwise direc` tion. VThe gear 71 carries 'atoothedsector 73,' the teeth Vof which are adapted'to mesh with teeth 74 on theblock` 59. It will now be understood vthat t-he frame 27 will be causedto'move downward by the cam 30, and that'the nail vengaging meansconsisting of the claw'member 57 and block 59-will be moved downwardlyby the sector 73, and that'there'-will come'aitime when thelatch 6 6relengages the projection 68 Von the-block 59 to hold the bloclrand clawmember 57 in position with the spring 62 under tension. The claw member57 will bemoved to its normal positionshownin Fig. 6,; but beforeitarrives at its normal position, the lug 56 will have encountered thelug55 on the latch 49 to irelease the nail encountering means, .orin

other xwords, will 'allowthe member 42 and therefore the abutment 45tobe moved rearwardly by the action ofthe spring 52 to a normalposition. l Y j ,One off-the uses of the' machine isto remove the nailsserving Vfor attaching a piece of fur instretche'd condition on a'table,the nails,

which project, are designated 75, the furjis designated 76, and thetabletop is designated 77 in which thefnailsare driven along the marginaledgeofthe fur 76 in rows. The 'op'- eration of vthe machine is'asfollows. `With theepart's of' the machine transposed as theyv are'inFig.'f1,consi'deringthata nailv has just been removed, the nailencountering means rwill have been operatedto bring the abutment- 45 toa position Vto'encounter one ofthe nails 7 5to prevent the advancementof the'V machine furtherthan a point at which the Y claw member 57 willbe in position to engage Y the encountered' nail. The machine will be in"const-'ant operation, Aconsequently the gear 34'will berotating inavclockwise direction.- There cames a time when the `sect,or:73 en,-

Y v gages the teeth 74, causing the block 59 and 33 of the frame 27.- Itwill'also be understood that the spring 62`will be placed under ten#sion. The block 59 will vmove downwardly,

relatively to the frame 27', to a position in which the lat'ch 66 willengage the projection 68. This is possible due to the fact thatcin thedownward movement of the frame 27, the

I latchG will have lcleared the pin 70 on the stationary plate 26 of theframe 2Q. Before Y the claw member 57 reaches its down or nail Dieengaging position, the lug 56 will havelen-k countered the lug onthelatch 49 t'odis-V Vengage it from the member-42 to allow the 1 ,clawmember 57 reaching its down position shown in Fig. 6. As the camSOcontinues to operate,` the frame 27 will be caused to move upwardly,sinceV thel camv will be acting on the -portion 32 of the frame 27. Theclaw member /57 will also be moving upwardly engaged under the head ofthe nail, and will exert a pulling force on the nail. As the A frame 27continues to 'move upwardly, there comes a time when the latch 66encounters the pin 70, and the latter causes the latch 66 to move on itspivot out of engagement with the projection 68 on the block- 59.I'mmediately the spring 62' which is stillunder tension exerts a quickjerk on th-e block 59 and therefore the claw* member 57, and as aconsequence the nail will be thrown upwardly .tobe deflected bythe wall2O into the receptacle 19, to complete the nail removing operation. Theoperation just described is repeated until all the nails have beenremoved,

which is accomplished by merelyv manually advancing the machine so astotraverse the rows ofV projecting nails.

j, vIt is to be understood that the invention A is not restricted to theprecise arrangementl of parts shown and described, as details ofVconstruction may be modified and rearranged 1 without departing from thespirit of the in- -f bv the terms of the appended claims.

vention, the scope of which is limited only u I claim:

`l. A portable machine for removing pro'V jecting nails comprising thevcombination of nail engaging means positioned to engage a nail in theforward movement of the machine, mechanism for exerting first a pullingforce on said nail engaging meansand then a quick jerk thereon whilesaid nail engaging means is engaged with a nail, to cause said means-toremove the nail, nail encountering meansy movable i'ntoi position; toencounter. another nail to prevent thegadvancement, ofthe ma"-` chineuntil the nail engaging means has api proximately returnedto itsengaging position, and means'for eecting themovement oflth'enailencountering means into and outofkv the encountering position jY 4 2." A Aportable machine for'removing pro-` jecting nails comprisingthe. combinationlof:

a'clawmember adapted to be engaged Yunder tliellieadof v-a nai'l, meansmounting theclaw memberfor up and downY movement, power..

means lconnectedfwith theclaw member and operable toca-use an initialcomparatively slow upward movementfof the claw member followed by" laquick upward jerk on Vthe clawv'member to Vcause the latter-tof removethe nail, 'saidpower means also lbeingloper- ;able to move ltheclawmember to zaiposition tov be'. engaged under the :head off another nailfor 'a repetition offlthefnail removing opera;

ftionjli .2' Y

Y y A I imachine for vremoving projecting f nails comprising ai; fixed.frame,'1a -frame Y movable up and jdown: on thetix'ed framea claw memberadapted to be' engaged underv the head of a nail, means. on the 'movableframe :mounting tlie'claw member'f-or up and down movement 'relative'thereto, recoil means connected' between 1 the movable frame andthe'claw member, a; latch on saidlmov- 'able frame actingV ontheclawmember-to holdf'it in a position'with therecoilmeans under aYdeterminate l tension, power and mo? tiontransmission mechanism for.effecting the upward mbveinent of' themovableframev j to cause theupward inoveii'ient'of the claw j member to cause the=latter=to :eXertfalpull Y on' the nail, means'for'releasingithe latchupon theupwardmovement of the movable "frame to -allowthe -recoil ymeans tovquickly jerkftliepclaw member upwardly to jerk the nail li'ipwardlyjsaidpower and' motion trans'- missionY inechan'ismjalso operating tomove the mvable Yfr'ameand theclaw 'member to theiri down positions,said latch being automatically irelengageable with theclaw meinber inthe relative "downward movementv of the claw member to again-'holdgtheclaw member :against i upward movement with re spectfto theV movableframe.

i Le. 2A machine for 'removing `nails `-comlprising thecombinationof aportable structure," a frame moirntedfvfor vguided upy and able clawion. said frame, la? recoil? spring con-v k.les

vnected with thef'clawV and.frame,a latchl on said' frame',vyieldable'fmeans 'acting on said Vlatch to engage'it weitlithe clawtohold the claw inaposition with .respect to theframe tofkeep the :recoilspring understension, a

shaft carried by said structure andv entende ing transverselyto theframe, fa kcam iixedto the ."sliaf'ft to effect the upfand downimovev lnu 'menti-of the 'frame' in response to', thekturn'A lingmOVem'ent ofthe shaft, a gear fixed onv nail removing mechanism including nail en- Ygaging means;vr nail encountering means said housing automaticallyengageable with the encountering member to hold it in the en-L-countering position, means operable to move the encountering memberoutof theencountering position when the latchmeans is dis 70 engagedfromthe encountering member, and means operated bythe nail removing Inechafnism toidisengage theilatch means duringl the operationof saidmechanismv to bring the nail engaging means intoa gage the encounterednail'. Signed Vat New York, in the county of New York and State of New,York, this 23rd day of January, A. D 11928. f

' Y JOSEPH A. ROGERS.

position t0` enmovable into and out ofnailencountering positiom-ad meansfor movingY said nail en countering meansinto and out of the nailVencountering position, V-the f encountering means in the nailencountering position serv,- ing to encounter one of vthe projectingnails to momentarily prevent `the advancement .of the machine furtherthan a point atwhich the nail1 engaging means will be engageable withvthe encountered nail by theadvancement of the machine, said nailengaging meansibein'g engageable with the nail Vwhen the encountering-means is out of its encountering position. v f

6. `A machine portable along a row of projecting nails, comprising thecombination of nail removing mechanismincluding nail 'en-l i Ygagingmeans; nail encountering meansv movable into and out of nailencountering position, and means operated by the nail removing mechanismfor moving said nail` encountering mea-nsV into and out of the nailencountering. position, the encountering means in the nail encounteringposition serving to encounter one ofthe-projecting nails to momentarilyprevent the advancement of the machine further than a point at which the,nail engaging means'will be engageable with the encountered nail by theadvancement of the machine, said n'ail engaging means being engageablewith the nail when the encountering means is out of its en-V counteringposition.

7. A machine portable alongrarowof pro'- jecting nails, comprising thecombination of a housing, nailV removing mechanism includlng nailengaging means operatively arranged in said housing; a nail encounter-Ving member mounted-for guided movement intov and. out of nailencountering position in said housing, means operated by the nail re- Vmoving mechanism while the latter is removing, a nail, to move theencountering member into the-encountering kposition toV i Yencounteranother one of the nails, forv the purpose of preventing the advancementof themachine beyond a position in which the nail `engaging means willbe engage'able with H, Y .l the encountered nail, latch means carried byy

